Detailed Weather Data for Project: HUGO

Date Time TAIR WSPD RELH SRAD 06Mar2018 8 a.m. 45.09 5.90 65.95 91.20 06Mar2018 9 a.m. 47.62 8.50 66.75 298.30 06Mar2018 10 a.m. 51.37 14.30 49.40 500.60 06Mar2018 11 a.m. 54.50 15.80 40.93 665.10 06Mar2018 12 p.m. 56.14 18.20 34.74 768.10 06Mar2018 1 p.m. 57.99 16.50 32.62 823.50 06Mar2018 2 p.m. 60.22 19.40 27.60 802.60 06Mar2018 3 p.m. 60.94 24.90 25.83 711.50 06Mar2018 4 p.m. 61.48 25.30 23.67 559.30 06Mar2018 5 p.m. 61.34 27.00 24.06 364.20 06Mar2018 6 p.m. 60.60 27.40 24.81 137.70 06Mar2018 7 p.m. 52.77 7.80 40.52 0.20 06Mar2018 8 p.m. 57.54 23.90 32.49 0.00 06Mar2018 9 p.m. 56.35 28.60 33.40 0.00 06Mar2018 10 p.m. 54.10 32.20 32.10 0.00 06Mar2018 11 p.m. 51.31 31.30 37.29 0.00 07Mar2018 12 a.m. 48.78 25.60 39.88 0.00 07Mar2018 1 a.m. 45.52 20.80 41.88 0.00 07Mar2018 2 a.m. 43.72 14.70 43.65 0.00 07Mar2018 3 a.m. 42.71 14.70 48.28 0.00 07Mar2018 4 a.m. 42.19 20.30 52.72 0.00 07Mar2018 5 a.m. 40.39 13.40 52.22 0.00 07Mar2018 6 a.m. 39.31 13.80 55.33 0.00 07Mar2018 7 a.m. 38.98 11.70 59.01 0.00 Accuml. Values 1230.98 462.00 985.13 5722.30 Num. Valid Values 24 24 24 24 Avg. Values 51.29 19.25 41.05 238.43 THE EMPERICAL EQUATIONS REQUIRE THESE PARAMETERS IN THESE UNITS: SRAD == CAL / SQUARE CENTIMETER WSPD == KILOMETERS PER DAY TAIR == DEGREES CELSIUS RELH == PERCENT Converted Values 10.72 743.36 41.05 492.00 Now start computations towards evaporation in inches per day Each intermediate calculation step will be shown. xcompl = 0.5895 definition: xcompl = 1 - (RELH_avg/100) TdC = -2.0896 definition: TdC = TAIR_avg - ((14.55 + (0.114*TAIR_avg))*xcompl +pow((2.5 + 0.007*TAIR_avg)*xcompl, 3) + (15.9 +0.117*TAIR_avg)*pow(xcompl, 14)) del_lambda1 = 0.5655 definition: del_lambda1 = pow(1+(0.66/pow(0.00815*TAIR_avg + 0.8912, 7)), -1) del_lambda2 = 0.4345 definition: del_lambda2 = 1 - del_lambda1 Qn = 4.8009 definition: Qn = 0.00714*SRAD_avg + 0.00000526*SRAD_avg*pow(TAIR_avg+17.8, 1.87) +0.00000394*pow(SRAD_avg, 2) - 0.00000000239*pow(SRAD_avg, 2)*pow(TAIR_avg-7.2, 2) - 1.02 es_ea = 7.6613 definition: es_ea = 33.86 * (pow(0.00738*TAIR_avg + 0.8072, 8) -pow(0.00738*TdC+0.8072, 8)) Ea = 15.4556 definition: Ea = pow(es_ea, 0.88) * (0.42 + 0.0029*WSPD_avg) Daily Evap: 0.371 inches definition: Daily Evap = (del_lambda1*Qn + del_lambda2*Ea) / 25.4

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